Photograph of a map and profile of the Colorado River Aqueduct, November 14, 1941. A birdseye view of Southern California occupies the middle of the image. The aqueduct can be seen traveling from the Colorado River at right to the Palos Verdes Reservoir at left. Several cities are labeled around the reservoir at left, while the tunnels, reservoirs, and pumps along the aqueduct are labeled as well. A depiction of the profile of the aqueduct suns along the bottom of the image, while an inset map of the United States in the upper left corner shows the location of the aqueduct.